Picker-motion for looms.



No'. 739,526. PATENTBDSEPT. 22, 190s.

- A. H. WHATLBY. PICKER MOTION APonmolxas.

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UNITED STATES Patented september 22, 1903.

PATENT OEETCE. 'i

ALFRED H. WHATLEY, OF PROVIDENCE, lRHODE ISLAND, ASSIGNOR TO JAMESMEERS, OF CUMBERLAND HILL, RHODE ISLAND, AND GEORGE READER, OEPROVIDENCE, RHODE ISLAND.

PICKER-*MOTION FOR LOOIVIS.A

SPECIFICATION formingpart of Letters Patent No. 739,526, dated September22, 1903.

`implication filed June 15, 1903.

To @ZZ whom. t may concern.-

Be it known that I, ALFRED H. WHATLEY, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented a new and useful Improvement in Picker-Motions forLooms, of which the following is a speciflcation.

This invention has reference to an improve- :o ment in looms, and moreparticularly to an improvement in picker-motions for looms.

In looms as heretofore constructed the picker-sticks are usuallypivotally secured on the outer ends of the rocking rail of the lay l 5and extend upward through the shuttleboxes. The pickers are secured tothe pickersticks, and when the picker-sticks are thrown by the mechanismof the loom in the usual. way the pickers move on aline forming a segzoment of an arc the center of which is the pivot of the picker-sticks.This motion of the picker-sticks gives an upward and downward movementto the picker in the shuttleboxes and an irregular movement to theshuttle, causing the shuttle to jump and smash the warp-threads in theloom.

The object ov my invention is to prevent bad weaving or smashing of thewarp-threads by an irregular vmovement or throw of the 3o shuttle, and Iaccomplish this object by mechanism controlling the picker-stick, givingto the picker-stick a movement corresponding to the true movementrequired of the shuttle-that is to say, the picker on the pickersticknow moves on. a straight line drawn lengthwise through the center of theshuttleboxes and the shuttle. 4

My invention consists in the peculiar and novel construction of amechanism adapted 4o to control the movement of a picker-stick to movethe picker on -the picker -stick in a straight line in the shuttle-box,as will be more fully set forth hereinafter.

Figure l is a front view of a loom with my improvedpicker-motions,showing the pickersticks in their normal positions in full lines and intheir inward and outward positions in broken lines. Fig. 2 is anenlarged front view of` the pickermotion mechanism detached 5o from theloom, showing the frame supporting sition by the dat springs o3 and c4,secured at Serial No. 161,407. (Nomodel.)

the cam and link for controlling the movement of the picker-stick andthe springs holding the picker-stick in its normal position; and Fig. 3is a sectional view taken lengthwise through the picker-stick andpicker-motion mechanism.

In the drawings, Cz. represents rthe rocking rail, a a thepicker-sticks, and d2 a2 the shuttie-boxes, of a loom; The rocking railextends through bearings in the loom sides and supports the lay of theloom in the usual way, and the picker-sticks are operated by thepicking-cones and picker-straps of the loom to throw a.V shuttle fromthe shuttle-boxes.

My improved picker-motion mechanism is secured on the ends of therocking rail a by -the frames b b and control the movement of thepicker-sticks a' a.

lower outwardly-extending arm b5, forming a support for the link c,pivotally secured to it by the bolt c. The picker-stick arm d has theelongated open recess ct', shapedto receive the lower end ofthepicker-stick. It is pivotally secured in the link c at its lower end bythe bolt c2 and held in its normal po- 8o their lower ends to the link cby the bolts c5 c5, as shown in Fig. 2. The adjustable camplate c withthe cam-slot e is secured to the arm b2 bythe bolt e2, forminga pivot,and the bolt e3 through the slot b4 in the end of the arm b2. The lowerend of the picker-stick is secured in the recess d in the arm Y d by thebolt d? and the boltf, having the headf between the cam-plate e and thearm b2 and carrying the roll f2, working in the cam-slot e in thecam-plate e. As the position of the picker-sticks varies in differentlooms, the cam-plate e is made adjustable by moving the outer end of thecam-plate upward or downward and securing it in the position re- 95quired by the tightening of the nut on the bolt e3.

In the operation of my improved pickermotion the shuttle is thrown fromthe shut- .tlc-box by the picker-stick against the ten- Ico sion of thespring o3, which takes the place of the usual floor-spring. The roll f2follows in the cam-slot c and raises the picker-stick and link c, asshown in broken lines on the right of Fig. 1. The tension of the springc3 now returns the picker-stick to its normal or central position. Thereturn blow of the shuttle carries the pickerstick outward against thetension` of the spring c4, acting as a check to neutralize the blow ofthe shuttle. The roll f2 in the cam-slot raises the pickel'- stick andthe link c, as shown in broken lines on the left -of Fig. 1. Thelink-pivot, the pivot of the picker-stick arm, and the camplate with thecam-slot c are so placed and adjusted as to give to the picker onthepickerstick a straight-line movement in the shuttie-box. v

By the novel construction of the mechanism of the picker-motion the blowis given in a straight line on the shuttle by the picker on thepicker-stick, the liability of smashing the warp-threads is eliminated,and a more perfect Weave is attained than has heretofore been done.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a picker-motion for looms, mechanism controllingthe picker-stick, consisting of a frame, a link pivotally secured to theframe, an arm pivotally secured to the link and supporting thepicker-stick, a plate having a cam-slot adjustably secured to the frame,and a roll on the arm supporting the pickerstick working in the cam-slotin the plate, for the purpose as described.

2. In a picker-motion, mechanism controlling a picker-stick, consistingof a frame secured on the end of the rocking rail of a loom, a linkpivotally secured to the frame, an arm pivotally secured to the link, apicker-stick secured in the arm,'a plate having a cam-slot adjust-ablysecured to the frame, and a roll on the arm supporting the picker-stickworking in the cam-slot in the plate, for the purpose as described.

3. In a picker-motion, mechanism controlling a picker-stick, consistingof a frame secured on the end ,of the rocking rail of a loom, a linkpivotall)7 secured to the frame, an arm pivotally secured to the link, apicker-stick secured in the arm, a spring secured to the link and actingon the arm to return the picker-stick to its normal position, a springsecured to the link and acting on the arm as a check to neutralize theblow of the shuttle on the picker-stick, a plate adjustably secured tothe frame, a cam-slot in the plate,

and a roll on the arm supporting the pickerstick Working in the cam-slotin thevplate, as described.

'4. In a picker-motion for looms, the combination with the frame b,consisting of the cylindrical body b having the arm b2 with the enlargedend b3 in which is the slot b4,

and the arm b5, of the link c pivotally secured to the arm b5 by theboltc', the picker-stick` arm CZ having the recess d and pivotally se-Vcured to the link c by the bolt c2, the iat springs o3 and c4 secured tothe link c by the bolts c5 c5, the adjustable cam-plate e with thecam-slot e secured to the arm b2 by the bolt e3 forming a pivot, and thebolt e3 through the slot b4, the picker-stick a. secured in the recess din the arm d by the bolt d2 and the boltf, having the head f andcarrying the roll]c2 working inthe cam-slot e', and means for securingthe frame b to the end of the rocking rail of a loom, as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

ALFRED H. WI-IATLEY.

' Witnesses:

B. S. WEBSTER, ADA E. HAGERTY.

